authority

• come down

  To strongly criticize or punish someone, or to deliver a definitive judgment or decision.

• Put your foot down

  To assert one's authority firmly and decisively, often to stop or prevent something.

• Laying down the law

  To assert one's authority or establish rules very clearly and forcefully, leaving no room for argument.

• The decision rests with you

  You are the person solely responsible for making the final choice or resolution.